Device for automatically closing cocks and the like.



K. V. ROTZOV. DEVICE FOR AUTOMATICALLY CLOSlNG eocxs AND THE LIKE.

APPL CATION FILED JUNE30,1910.

Patented July 9, 1912.

UNITED s'ra'rns KNUD VALDEMAR ROTZOV, OF MALMb,

SWEDEN.

DEVICE FOR AUTOMATICALLY CLOSING COCKS AND THE LIKE.

Application filed June 30, 19107 Specification of Letters latent.

Patented July 9,1912.

Serial No. 569,687.

1 all zebra/1.1612203 ('OIUFJ'IL.

Be it known that l. Kntin Vanocnan Rorzov. subject of the King ofDenmark, residing at .\lahno. Sweden, have invented new and usefulimprovements in Devices for .tttuuatitttll Closing (ocks and the Like,otwhich the following is a specification.

My invention relates to improvements in automatic closing devices forcocks more especially intended for use in connection with gas orpetroletun stoves, but which may be employed in all relations where theperi'ormanee It a similar function is required. for instance inconnection with eleetric cut outs on elect rie cooking apparatuses.

The purpose of the invention is to provide means for automaticallyclosing the fuel supply. i. extinguishing of the tlame.

The invention consists in the novel construction and combination ofparts, as is hereinafter described and detined in the appended claims.

Reference is to be had to the accompanying drawings forming a part ofthis speciti cation in \vhich Figure 1 is a view in side elevation of astore combined with the closing device. parts of the latter being shownin section for the sake of clearness. Figs. 2 and 3 vshow moditieationsof the invention.

The gas stove is in the drawing indicated by t. .\t the upper part ofthe cooking vessel 2 or on its cover a shortpipe 3 is applied. the outert'ree end of which points toward a tunnel shaped expansion on apipe 5extending from a box 4-. The lower part of this pipe ends over a cup?which is carried up by a lever (i. counterweight S, a spring or the likeacts upon the other end of the lever. When the steam commences to escapefrom pipe and strikes the funnel. it becomes condensed and (tows bydrops through the pipe Ii wheret'rom it falls into the cup t. Then theequilibrit'tm of the level isal- V tered so that a circuit with anelectromagnet becomes closed. A mercury cup 10, wherein the lever arm ispressed down by the weight of condensed waterdrops, is suitably used asa contact maker. This mercury switch is connect ed with a. terminal 12by means of a conducting wire it and the lever G is conneeted with theterminal 1-1 by means of a wire 1?. The. armature 15 of theelectromagnet consists of a lever provided at one, of its ends with ahook 1G or the like adapted to engage an arm 18 which is fastened to theplug 1? of the gas cock and which is provided with a weight 19. Bymaking the. contact between the lever 6 and the mercury cap the armature15 is attracted. Then the hook i releases the arm 18 which falls downtogether with the weight 19. By this movement the cock becomes partly orentirely closed according to as the arm 18 sooner or later hits aprojection or the like 20. The bottom of the eup 7 is suitably slanting,so that one of its edges reaches up to the upper edge of the cup and thewater drops may tlow out when eup moves downward. After the eup thushaving been emptied it raises it elf and eats oil the current. Thearmature 13 is jonrnaled on the tap ill and rests with its heavier armagainst a pin as long as the circuit is broken. \Vhcn the lever 6 isprovided with the adjustable counterweight h'. the interruption of thecooking can be retarded by adjusting the weight.

instead of the steam being caught and condensed in a separate pipe orthe. like it may be condensed in a pipe or the like connected with the\t.-Stl 2 so that the Condenseil drops all directly from the cookingvessel upon the'releasing device. as shown in Fig. L.

In order to be independent of having the pipe t pointing toward thetunnel or releasing device the cooking vessel may be provided with aringshaped opening through which the steam can escape in all directions.as shown in Fig. 3. In whatever direction the vessel then may be turnedthe steam always strikes the tunnel or if the steam is condensed alreadyin the, ring shaped opening the drops always fall upon the releasingdevice.

llaving thus described my invention I claim as new and desire to secureby Letters Patent:

1. In a device of the class described, in combination a cookingapparatus, means for regulating the supply of heat-producing mediumand'means positioned externally of said cooking apparatus controlled bythe condensatit-m from steam from the liquid being boiled on theapparatus to actuate said first-mentioned means.

3. In a device of the class described, in eombination. a cookingapparatus, means for regulating the supply of heat-producing 1 mediumand means controlled by the condensation from steam from the liquidbeing boiled on the apparatus to actuate said firstmentioned means.

In a device of the class described, in combination, a cooking apparatus,means for regulating the supply of fuel thereto, and

means controlled by the condensation from steam from the liquid beingboiled on the apparatus to actuate said first-mentioned means.

4. In a device of the class described, in

combination, a cooking stove, a valve for regulating the supply of gasthereto, and means controlled by the condensation from steam from theliquid being boiled on said stove to close said valve.

5. In a device of the class described, in combination, a cookingapparatus, means for regulating the supply of fuel thereto, and meanscontrolled by the condensation from steam from the liquid being boiledon the apparatus to actuate said first-mentioned means, saidsecond-mentioned means comprising a pivoted lever provided with areceptacle to receive the condensed steam.

(i. In a device of the class described, in combination, a cookingapparatus, means for regulating the supply of fuel thereto and meanscontrolled by the condensation from steam from the liquid being boiledon the apparatus to actuate saidtirst-mentioned means, saidsecond-mentioned means comprising a pivotally mounted lever providedwith a receptacle adapted to receive the condensation from steamadjacent one end thereof and means for normally maintaining said leverin a substai'itially horizontal, position, said receptacle beingprovided with an inclined bottom whereby as the lever is moved downwardunder the action of the tacle, permitting said will be stopped, Iingsaid valve in its open pos1t1on,aneleetr0- 65 steam which iscollected the condensation from escape from the recep third mentionedits normal posicondensation from in the r ceptacle, steam is allowed tomeans to move the lever to tion.

7. In a device of the class described, in combination, a cookingapparatus, means for regulating the supply of fuel, said means tendingnormally to occupy a closed position whereby the supply of fuel will bestopped,

a member relcasably holding said first-mentioned means in open position,and means controlled by the condensation from, steam from the liquidbeing boiled on the apparatus to actuate said member to release saidfirst-mentioned means whereby the latter may assume its closed position.

8. In a device of the class described, in combination, a cookingapparatus, a valve for regulating the supply of fuel thereto, said valvetending normally to occupy its closed position whereby the supply offuel a member releasably holdmagnet adapted upon energization to actuate said member to release said valve, a norn'n'illy-open circuitcontaining said magnet and a circuitcloser for closing said circuit,said circuit-closer being actuated by the condensation from steam fromthe liquid being boiled upon said apparatus.

In testimony whereof I ilfi,\8 signed my name to this specification inthe presence of two subscribing witnesses.

KNUD VALDEMAR norzov. \Vitnesses: 4

A. W. Axm-xason, l). RKm-tao.

